Title

The brightens of splitting light between two mirrors.

Problem Scenario

When you take a 90* angel mirror, and take a projector, computer you can tell how much light is reflecting off of the 180*mirror.

Broad Question

What happens to the brightness of the light when the light splits?

Specific Question

What happens to the brightness of the light when the light is split?

Hypothesis

The levels of light would be to bright for the light sensor to handle.

Graph of Hypothesis

Variables

Independent Variable: Measurement distance and angle

Dependent Variable: Brightness

Variables That Need To Be Controlled:Brightness of the light and the lab quest sensor.

Vocabulary List That Needs Explanation

Lab quest:

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General Plan

1. At the beginning of my experiment I started out by setting it up.The first thing I did was I got a cardboard box and put a medium sized mirror on each side of the box. I took a projector and a laptop into a dark room and I recorded the brightness of the reflection coming out of the projector reflecting off of the mirrors.I used a light sensor and a lab quest to collect my data.

Potential Problems And Solutions

While performing my project I found that I had to be extra careful with the pieces of glass so I didn't get cut with it.While I was operating the projector I found that I needed to be careful of where I put my hands on the projector do to the heat it gave off. The heat was hot enough to burn you.The light was bright enough to hurt your eyes if you looked at it to long.

Safety Or Environmental Concerns

The only thing to be careful about is the sharp corners of the mirror,the heat and light off of the projector.

Experimental Design

Number Of Trials:

5

Number Of Subjects In Each trial:

4

When data will be collected

March 2012

Number of Observations:

6

Where will data be collected?:

KMS

Resources and Budget Table

I had 7 resources that I got through my Science class so these resources cost me nothing.

Data Table

What	Where	Cost
Lab Quest	Science class	0$
Computer	Science class	0$
Projector	Science class	0$
Light sensor	Science class	0$
Mirrors	Science class	0$
Cardboard box	Science class	0$
Duck Tape	Science class	0$

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Background Research

what is light.is an electromagnetic radiation.

Detailed Procedure

When you take a 90* angel mirror, and take a projector, computer you can tell how much light is reflecting off of the 180*mirror, and take a lab Qwest and a light senser.

Photo List

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All Raw Data

Graphs

decrease size

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Data Analysis

Distant from bulb 180 mirror left 90 right 90
30cm 7330 2186 2931 4087
60cm 6491 965 3147 3721
90cm 8964 450 1467 2045
120cm 2804 133 1870 1037
180cm 3723 913 1558 1937

Conclusion

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Discussion

My experiment on measuring light could be improved by using a different distance,a brighter light and using a longer ruler . By using a longer distance this could help the brightness of the light when it is reflecting.By having a brighter light it would give you more reflection off the mirror. If i have a longer ruler it would easier to measure.By doing this project I feel it has helped me to learn about light and distance. I would recommend to make a car that has one light this would save money and energy..

Benefit to Community and/or Science

Abstract

I chose to do my experiment on Light. The purpose was to measure the brightness of the
light coming off the mirror.This experiment was to try to have a one way light bulb for cars. I found that by doing my experiment it could change they way cars use lights.